题目内容
Engine block, cylinder block, or simply block are the terms likely to be heard in the garage or on the street.The engine block is the key of vehicles that run on internal combustion engines, providing the powerhouse for the vehicle.
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It is called a block because it is usually a solid cast car part, housing the cylinders and their components inside a cooled and lubricated crankcase.
The core of the engine block is the cylinder, capped by the cylinder head.
The opening at the bottom of the crankcase will be sealed by an oil pan, or sump, that holds the engine oil.
One way to increase the power of an engine is to _____ its capacity, that is, the amount of space for fuel and air above the piston. The volume inside the cylinders can be increased by making them wider, in a process known as engine _____.A machine shop will bore the cylinders out to increase the diameter, while ensuring that the cylinder runs exactly _____ to the _____. Once this is done, the engine will need oversized _____ and piston rings to fit the newly sized cylinder.
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